Burner for combustion under high pressure.



O. A. BAOKSTROM. BURNER FOR COMBUSTION UNDER HIGH PRESSURE. APPLICATION FILED 111111121, 1909. RENEWED MAY 21, 1910. f

Patented Nov. 1, 1910.

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wazzz g0 G. A. BAOKSTROM. COMBUSTION UNDER HIGH PRESS BURNER FOR URrs. APPLICATION IILBD JUNE 21 1909. RENEWED MAY 21', 1910.

Patented Nov. 1, 1910.

2 SHEETS-SHEET 2.

IM'mwtov f, 5.1 ar? 2 II 5:555:iiwww WWnmco y ok m UNITED sTA ns PATENT OFFICE.

CHARLES A. BACKSTBOM, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO INTER- NATIONAL POWER GENERATOR COMPANY, A CORPORATION OF DELAWARE.

BURNER FOR COMBUSTION UNDER HIGH PRESSURE.

Specification of Letters Patent, i Patented N 1, 1910.

- Application filed June 21, 1909, Serial No. 503,417. Renewed May 21, 1910. Serial No. 562,770.

T 0 all whom "it may concern- Be it known that I, CHARLES A. BACK- STROM, a citizen-0f the United States, residing in the city and county of Philadelphia,

State of Pennsylvania, have invented a new and useful Burner for Combustion Under High Pressure, of which the following is a specification.

The object of mvpresentinvention is to devise a novel burner whereby combustion may take place under a pressure higher than atmospheric pressure.

In a co-pending application tiled by me on September 15th, 1908, Serial. No. 453,106 and allowed March 24th, 1905), l have shown and broadly claimed an apparatus for the utilization of products oig combustion in combination with steanr or other suitable gases, and my present invention is especially adapted to be employed in conjunction with an apparatus constructed in accordance with my prioinapplicatibn to which I have above referred. It will bereadily seen that in an apparatus of this kihd aburner constructed on the ordinary or conventional lines of hydrocarbon burners would result in an interrupted and more or less incomplete and unsteady combustion on account of the presence of large volumes of carbon-dioxid and nitrogen. To avoid such a state of affairs a perforated cap is provided, inclosing the burner and in w ich the combustion takes place and is \vhol-y completed, driving out during its progress .the objectionable or destructive gases. This cap becomes of a high temperature and thus insures a non-interruption in tl1tB C0llil)l,lstl()ll. in order that the fuel gases at d the air will assume a very high tcmpcratui ddletorc uniting, the burner is provided with afilong vaporizing chamber tir under higher pressure than the atmos: phere is introduced iirtlic center of the burner proper and is in turn heated by the. high temperature of the vaporizing chamher, in other words the fuel gas and the oxygen in the air arohighly superheated before uniting with each other.

It is to he noted that in practice the entire burner is located at a poin where the temperature of the combustion gases or products of combustion are of the highest temperature; nan-hing approximately Fahrenheit.

For the purpose ot illustrating the invcnioo q tion, one form thereof is shown in the accompanying drawings, since'this embodiment has been found in practice to give a substantially perfect combustion without effecting the durability of the device, although it is to be understood that the various instrumentalities of which the invention consists can be variously arranged and organ ized and the invention is not limited to the exact arrangement and organization of these instrume-ntalities as herein set forth;

Figure 1 represents a sectional 'elevation of a burner embodying my invention and showing the same in assembled position with respect to a portion of an apparatus for utilizing the products of combustion. Fig. 2 represents a section on line viz-12, Fig. 1. Fig. 3 represents a top plan view of the burner cap. Fig. at represents a section on line rrrv l igj Fig. 5 represents a sectional elevation of a ttuid generator in conjunction with which a burner embodying this invention is employed Similar numerals of reference indicate corresponding parts in the figures.

-l t e-fr.-' rring to the drawings :1 designates a sleeve provided with a flange 2, whereby the same may be readily secured imposition. The sleeve 1 is threadedas at 3 or otherwise adapted to receive an outer sleeve 4. The two sleeves form a vaporizing chamber 5. The inner sleeve is slightly shorter than the outer sleeve in order to provide an annular passage 6 for the fuel gas between the end of the sleeve 1 and the 'top plate 7 of the burner roper. The top plate is provided with a t ange 8 which serves as a support for the cap 9. The cap 0 is provided with perforations 10 located on its circumference and partly on its upper face, as will be clearly understood from Fig. 3.

in order to clearly show that the burner is located in the heat zone of the apparatus there is shown in Fig. 5 a construction similar to that shown in the copending application hereinbefore referred to. l t is the casing provided with a water jacket 15 for maintaining a high temperature difference between the atmosphere and the heat zone v16 'of the apparatus suitable means being pro-,

vidcd for rapidly feeding water to the water jacket 15 from whence it passes througha suitablc conduit 17 to the boiler prope 18.

The burner shown in Fig. 5 in the heat zone of the apparatus is the same as that seen in Fig. 1 and has the same referenceicharacvaxiapparatus such as is shown in my pllOI .allowedapplication, hereinbefore referred to.

- he operation is as follows :Air under pressure higher than atmospheric is introduced at 11 and the fuel such as for example hydrocarbon or gas, is introduced at 12. The all as well as the fuel is superheated before it unites and passes through the aperture 13 where the combustioncommences and as the combustion pro esses, drives the detrimental carbon dloxi and nitrogen gases through the ports 10. The combustion is wholly completed orsubstantially. completed Within the cap 9. The products ofcembustion resulting from the combustion within the burner are driven out by the incoming charge and pass through the boiler tubes 19 and completely around the boiler into the mixing 0 amber 20 where they mix with the steam coming from the ports 21 surrounding the tubes 19 from whence they areled to a suitable oint of utilization.

-It wil be ap arent that the burner is Shown as being ocated in the heat zone of 1 wish to call special attention to the fact that in in novel burner the combustion takes place an is fully completed within the cap 9 of the burner,-which maybe considered as the combustion chamber. No possible com- ,bustion'can take place outside of this cap on account of the presence of a large amount of carbon dioxid and nitrogen.

burner proper within the heat zone i s to utilize the heat of the products of combustion in vaporizing the fuel and su erheating the air. Having t ius described my invention, what I claim as new and desire to secure by Lettors Patent, is

1. A'burner located in a heat zone, said burner havin a vaporizing and superheating chamber orthe fuel and a superheating chamber for the: air and provided with a chamber receiving the united fuel and air indin which the combustion talres place and .s fully completed, said chamber being provided with apertures communicating with the heat zone.

2. A burner located in a-high pressure heat zone, said burner having an outer vaporizing'and super-heating chamber for the fuel and an inner superheating chamber for the air and provided witlra chamber receivzone, said burner having an outer va orizing and superheating chamber surroun ing the airronduit, and provided with a chamber in which the combustion takes place and is fully completed, said last named chamber having apertures communicating with the high pressure heat zone.

4. A burner located ina high pressure heat zone, of an apparatus for utilizing the products of combustion, said burner having a vaporizing and superheati-ng chamber surrounding the air inlet, and provided with a chamber in which combustion takes place and is completed, said chamber having apertures communicating with the high pressure heat zone of the apparatus} 5. The combination 1n a bustlon at a pressure hlgher'than atmospheric, of an inner sleeve forming an air.

conduit, an outer sleeve forming with the inner sleeve a vaporizmg and superheating chamber for the fuel, a cap for the outer ends of said sleeves and acombustion chamber seated on said cap and provided with apertures.

' CHARLES A. BACKSTROM. 1

Witnesses:

HERBERT S. FAIRBANKS, C. D. MoVAY.

, burner for com- 

